EP2437003B1 - Solar panel for glazing system - Google Patents

Solar panel for glazing system Download PDF

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Publication number
EP2437003B1
EP2437003B1 EP10185749.8A EP10185749A EP2437003B1 EP 2437003 B1 EP2437003 B1 EP 2437003B1 EP 10185749 A EP10185749 A EP 10185749A EP 2437003 B1 EP2437003 B1 EP 2437003B1
Authority
EP
European Patent Office
Prior art keywords
solar panel
rim
box
front cover
transparent front
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10185749.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2437003A1 (en
Inventor
Robert Sundkvist
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunstrip AB
Original Assignee
Sunstrip AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunstrip AB filed Critical Sunstrip AB
Priority to EP10185749.8A priority Critical patent/EP2437003B1/en
Priority to ES10185749T priority patent/ES2431238T3/es
Priority to PL10185749T priority patent/PL2437003T3/pl
Priority to CN2011800475537A priority patent/CN103154634A/zh
Priority to PCT/SE2011/051162 priority patent/WO2012044244A1/en
Publication of EP2437003A1 publication Critical patent/EP2437003A1/en
Application granted granted Critical
Publication of EP2437003B1 publication Critical patent/EP2437003B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/40—Casings
    • F24S80/45—Casings characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/60—Thermal insulation
    • F24S80/65—Thermal insulation characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/601—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by bonding, e.g. by using adhesives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/6012—Joining different materials
    • F24S2025/6013—Joining glass with non-glass elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the present invention is related to a solar panel for glazing systems in accordance with the preamble of claim 1.
  • Solar collectors are used in order to capture solar energy. There are several different ways of capturing solar energy, using appropriate collector technology. Sunlight can be converted into electricity in solar cells or solar thermal insolation, i.e. solar radiation energy received on a given surface area in a given time, may be captured by a surface, raising its temperature, with the heat being transferred to a medium, which can be either a liquid or a gas.
  • a medium which can be either a liquid or a gas.
  • the heated medium can then be used either directly, as for heating swimming pools, or indirectly via a heat exchanger.
  • Thermal solar collectors can deliver heat for a wide range of applications, such as for heating domestic hot water and space heating. Another interesting application is to use thermal solar energy for producing cooling. Such a cooling application is particularly attractive as about 15-20 % of all world electricity is used for various types of cooling or heat pump systems, and because it is particularly in areas where insolation is high that cooling requirements are likely to be greatest.
  • a commonly used type of thermal solar collector is the so called flat plate solar collector.
  • a flat plate solar collector usually consists of a thermally insulated case with a cover glass.
  • the case contains an absorber, which absorbs the incident radiation, and which usually heats a fluid, such as e.g. a water/glycol mixture, circulated in contact with it.
  • the cover glass and thermal insulation behind the absorber minimise heat losses to the surroundings.
  • the heat may e.g. be transported in a closed circuit to a heat store, such as a domestic hot water tank or a hot water tank for space heating purposes, forming part of a solar energy system.
  • Flat plate solar collectors are usually made of a sheet metal box structure, often having an aluminium frame as a stabilizing portion. An insulation material is usually inserted into this box structure to reduce heat losses from the solar collector.
  • a general feature of these designs is that they comprise a plurality of points at which the heat transmission to the ambient atmosphere is great, usually due to metallic connections between the absorber and the sheet metal box structure or aluminium frame. These so-called “thermal bridges” are then usually further promoted by the commonly used metallic structures applied for mounting groups of Flat plate solar collectors at rooftop positions of buildings.
  • Another feature of the common designs is a great demand of labour and machinery in the production which reduces the production capacity and yields high production costs.
  • Still another frequent problem of the common designs relates to outgassing from the insulation. Outgassing means that a binding agent from the insulation is emitted as gas when the insulation is heated. These gasses then accumulate as a film at the inside of the cover glass and at the absorber. This film has a negative effect on the efficiency of the solar collector.
  • a previously known solar collector is disclosed through US 4 538 592 A , which document shows a solar collector comprising a supporting panel, a transparent plate cover connected at its rim portion to the supporting panel, and an absorber element enclosed between the supporting panel and the plate cover.
  • the supporting panel is compression moulded of a fibre material with a thermosetting binding agent and has a generally plain bottom portion and a rim portion extending at an angle to the bottom portion and made integral therewith.
  • An object of the present invention is to provide an improved solar panel for glazing systems, through which the above discussed problems are eliminated or at least reduced.
  • a solar panel for glazing systems which comprises: a self-supporting panel, compression moulded from at least one thermally insulating fibre material and a thermosetting binding agent to form an open-top box having highly a compressed rigid rim and less so compressed thermally insulating side walls and bottom; a radiation transparent front cover connected to the self-supporting panel at the rim sealingly enclosing the box; an in the enclosed box, between the radiation transparent front cover and the thermally insulating side walls and bottom, arranged absorber unit; and a metal foil covering the rim, inside walls and bottom of the box.
  • Figure 3 illustrates the positioning of the metal foil through an enlarged detail of a left hand end section of the figure 2 view.
  • the present invention is based on the realization that glazing systems are becoming ever more frequent parts of newly constructed or refurbished buildings. Such glazing systems are commonly standardized to receive glass panes of different sizes. As these structural glazing systems usually cover large sections of the building, such as facades and roofs, these structures will provide large areas exposed to insolation. Thus the present invention aims at providing a solar panel for glazing systems and especially one suited for mounting to commonly used standardized glazing systems.
  • FIG. 1 an exploded view of a solar panel 1 for glazing systems is illustrated.
  • Use of the solar panel 1 in accordance with the present invention in glazing systems enables the provision of active facades for multifunction like heating, cooling, hot tap water and solar shading.
  • the solar panel 1 comprises a self-supporting panel 2, compression moulded from at least one thermally insulating fibre material and a thermosetting binding agent to form an open-top box 2.
  • the open-top box 2 has a highly compressed rigid rim 3 and less so compressed thermally insulating side walls 4 and bottom 5.
  • This self-supporting panel 2 being one integral unit allows for a reduction of the number of components required for the solar panel as well as a reduction of the time and effort required for assembly thereof, as compared to the prior art sheet metal box structures or aluminium frames.
  • a radiation transparent front cover 6 is connected to the self-supporting panel 2 at the rim 3, sealingly enclosing the box 2.
  • the radiation transparent front cover 6 may be made from ordinary glass or tempered glass, single or double. Various types of single or double synthetic glass may also be used, since the self-supporting panel 2 is relatively elastic and therefore able to follow the movements of the radiation transparent front cover 6 without incurring tension thereto.
  • An absorber unit 8 is arranged within the enclosed box, between the radiation transparent front cover 6 and the thermally insulating side walls 4 and bottom 5.
  • the absorber unit 8 comprises an absorber plate 8a of aluminium, with a metallically joined copper tube 8b for conveying the heat transfer liquid.
  • the absorber plate 8a has a slanting circumferential edging 8c.
  • a slanting circumferential edging 8c provides for a substantially improved Incident Angle Modification (IAM) - effect. i.e. provides for a substantially improved energy absorption at low angles of inclination between the sun and the absorber plate 8a. This is especially useful if the solar panels 1 are wall mounted.
  • IAM Incident Angle Modification
  • a metal foil 9 is provided, covering the rim 3, inside of walls 4 and bottom 5 of the box 2.
  • This metal foil 9 is suitably applied to the inside of walls 4 and bottom 5 of the box 2 in a pressing step subsequent to the step of compression moulding the self-supporting panel 2.
  • the metal foil 9 provides a diffusion seal and a reflector.
  • the diffusion seal prevents outgassing from the insulation, which is a known problem occurring in solar panels.
  • Outgassing means that the binding agent from the insulation is emitted as gas when the insulation is heated. These gasses then accumulate as a film at the inside of the radiation transparent front cover 6 and at the absorber unit 8. This film has a negative effect on the efficiency of the solar panel.
  • the reflector provided by the metal foil 9 reflects radiated heat from the backside of the absorber unit, thus reducing heat losses.
  • the radiation transparent front cover 6 projects outwardly of the rim 3, in this way facilitating attachment of the solar panel 1 to a standard glazing system.
  • the solar panel 1 comprises the self-supporting panel 2 and no framing from sheet metal or extruded aluminium profiles.
  • the edges of the radiation transparent front cover 6 may thus be clamped in a standard glazing system.
  • the solar panel 1 may easily be sized to fit different glazing systems simply by altering the external dimensions of the radiation transparent front cover 6.
  • the self-supporting panel 2 may be produced in a number of standardized sizes in order to keep production costs to a minimum whilst allowing for flexibility in solar panel 1 sizes.
  • the absorber unit 8 will have no metallic connections to the mounting structures, thus thermal-bridges are eliminated and the efficiency of the solar panel 1 improved as compared to prior art solar panels.
  • the radiation transparent front cover 6 is preferably glued to the self-supporting panel 2 at the rim 3 such that the box 2 is sealed essentially gas-tight.
  • the box 2 is filled with a gas having lower thermal conductivity than air.
  • a gas filling provides for reduced heat losses through the radiation transparent front cover 6 and thus a further improved efficiency of the solar panel 1.
  • this kind of gas filling is previously known, the novel design of the solar panel 1 facilitates such gas filling and thus provides for reducing the cost therefore.
  • Screen printing is arranged at a side of the radiation transparent front cover 6 facing the self-supporting panel 2 such that it, at least partially, covers the rim 3.
  • This screen printing should cover glued areas as well as the parts of the metal foil 9 covered inside of the box 2 which are not covered by the absorber unit 8.
  • this screen printing has the technical effect of providing UV protection for the glue used to affix the radiation transparent front cover 6 to the self-supporting panel 2.
  • the screen printing also contributes to the thermal performance of the solar panel 1.
  • a glazing system which comprises one or more solar panels as described above.
EP10185749.8A 2010-10-01 2010-10-01 Solar panel for glazing system Not-in-force EP2437003B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10185749.8A EP2437003B1 (en) 2010-10-01 2010-10-01 Solar panel for glazing system
ES10185749T ES2431238T3 (es) 2010-10-01 2010-10-01 Panel solar para sistema de acristalamiento
PL10185749T PL2437003T3 (pl) 2010-10-01 2010-10-01 Panel słoneczny dla systemu oszklenia
CN2011800475537A CN103154634A (zh) 2010-10-01 2011-09-29 用于玻璃窗系统的太阳能电池板
PCT/SE2011/051162 WO2012044244A1 (en) 2010-10-01 2011-09-29 Solar panel for glazing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10185749.8A EP2437003B1 (en) 2010-10-01 2010-10-01 Solar panel for glazing system

Publications (2)

Publication Number Publication Date
EP2437003A1 EP2437003A1 (en) 2012-04-04
EP2437003B1 true EP2437003B1 (en) 2013-07-24

Family

ID=43662239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10185749.8A Not-in-force EP2437003B1 (en) 2010-10-01 2010-10-01 Solar panel for glazing system

Country Status (5)

Country Link
EP (1) EP2437003B1 (es)
CN (1) CN103154634A (es)
ES (1) ES2431238T3 (es)
PL (1) PL2437003T3 (es)
WO (1) WO2012044244A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223040A1 (de) * 2013-11-12 2015-05-13 Sms Siemag Ag Verfahren zum Verarbeiten von erhitztem Gut
EP3064862A1 (en) * 2015-02-25 2016-09-07 Solar-Tec SA Solar panel and production method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2427558A1 (fr) * 1978-05-31 1979-12-28 Bruneau Etienne Chassis de capteur solaire
SE434186B (sv) * 1982-05-27 1984-07-09 Inga Sundquist Solmodul
US4597378A (en) * 1983-09-12 1986-07-01 Smith William F Solar energy collector and glazing system
AU6928096A (en) * 1995-08-24 1997-03-19 Heinz Grosswang Solar collector
DE10106776A1 (de) * 2001-02-12 2002-08-14 Gerhard Hiesl Solarmodule sowie Verfahren zur Raumkühlung und Energiegewinnung
DE10239371B3 (de) * 2002-08-28 2004-05-19 Puren-Schaumstoff Gmbh Dämmelement für einen Sonnenkollektor
CN201241586Y (zh) * 2008-08-08 2009-05-20 陈锦建 太阳能多功能窗

Also Published As

Publication number Publication date
CN103154634A (zh) 2013-06-12
PL2437003T3 (pl) 2013-12-31
WO2012044244A1 (en) 2012-04-05
EP2437003A1 (en) 2012-04-04
ES2431238T3 (es) 2013-11-25

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